Improvement in apparatus for cooling and circulating air in buildings



v A. iAS. Apparatus for Cooling and Circulating Air in Buildings. No, 162,660 Patented Apri|27,i875.

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y w a 2 5 1 UNITED STAT as PATEN OFFICE.

AUGUSTE JAS, or NEW ORLEANS, LOUISIANA, ASSIGNOR or oNa'uALF HIS RIGHT TO A-Lener c. JANIN, or SAME PLACE.

IMPROVEMENT lN APPARATUS FOR COOLING AND CIRCULATING AIR lN BUILDlllGSr Specification forming part of Letters Patent No. [62,660, dated April 27, 1875; application filed April 6, 1875.

' for Ventilating and Cooling Buildings, &c., of

which the following is a specification:

This invention contemplates the ventilating and cooling of rooms, buildings, and other structures by means of metallic surfaces arranged in said structures, and cooled by contact with a refrigerant, (such as the volatile agents used in machinery for making ice,) and also by means of air which is first cooled by the action of the refrigerant, and then is dischargedinto said structures.

I am aware that this method of cooling and ventilating is, broadly considered, not new. My invention is directed to improvements on apparatus required for the purpose.

Following a plan which heretofore has been suggestedas, for instance, in Letters Patent to Miihl, No. 146,267, dated January 6, 1874- 1 arrange the refrigerating apparatus in the upper part of the, room or other structure. In such proximity to said apparatus as to be acted on by the refrigerant, ll locate the ducts which convey and supply air to the room, the air being thus cooled before its discharge. The metallic structure that forms the conduit for the refrigerant is formed with or surmounted by a trough designed to contain a liquid, such as salt and water, that will not easily eongeal. The air-duct is immersed in and led through this bath, to the end that the full effect of the.

refrigerating action upon the air may be obtained. The manner in which I prefer to carry my improvements into effect will be understood by reference to the accompanying drawing, in which Figure 1 is a perspective view of a portion or section of an apparatus embodying my invention. Fig. 2 is a longitudinal vertical ccntral section, and Fig. dis a transverse vertical section, on an enlarged scale, of the same. The apparatus here shown is a long troughlike structure, with a double bottom, or double bottom and sides, by which is formed the conduit a for the passage of the refrigerating agent, such as ammonia, ether, rhigoline, 8:0.

The double bottom may be plane or curved; it preferably has the'lattcr form,,as shown in the drawing, the two plates being concaveconvex, with the convex face uppermost. I also prefer to make them of corrugated metal, the corrugations running lengthwise. of the structure. This formation enables meto double or triple, for the same amount of gas, the number of points of contact with the air to be cooled. The double bottom is preferably formed by the union of two plates of copper, which are brazed together at their side edges, and are further united by external bands and ties, if required. The trough, however, can be made of other metal or material, and its parts, instead of being soldered or brazed together,

can be united byother means-as, for in-- stance, by bolts and nuts, with packing, such as rubber, interposed between their edges, in

order to make a tightjoint. As shown in the drawing, the sides of the trough are do'uble,

as well as the bottom. This, however, while preferable, is not a necessity.

Within the trough A, and extending along its longitudinal center, is an air-duct, B. Air is supplied to this duct by suitable means, such as a fan, by which a current of air will be caused to flow through the duct. The air is discharged into the room from openings 0, with which the duct is provided at suitable intervals.

The device represented in the drawing is a single section, to which other sections, as many as desired, may be joined. The section is provided with end plates or flanges d, to which are united, by bolts or nuts, the plates on the contiguous ends'of the other sections. A rubber packing is interposed between the plates to secure a tight joint.

It is manifest, without further explanation, that a number of sections can be thus put together to maintain a continuous air-duct and an uninterrupted conduit for the refrigerant. The air'pipe sections may have thimbles or projecting ends, which will fit into the adjoining air-tubes when the sections are brought together. I

The refrigerant is supplied to the apparatus by means ordinarily used in ice machinery, the

apparatus occupying the same position with I relationto the supply and condensing apparatus that the freezing-vessel does to thesame apparatus in ordinary ice-machines.

At the inlet end of the apparatus I locate a trap, G, indicated by dotted lines in Fig. 2.

This trap has an internal transverse partition extending nearly to its bottom, which compels the refrigerant to pass down under the partition before it can reach the conduit (1. The object and effect of thistrap'are to cause the foreign and less volatile matters that may he brought in by the gas-to be deposited in the bottom of the trap, and prevented from entering and. clogging the conduit. These matters can be drawn off from the trap from time to time through an opening closed by a screw-plug, a valve, or otherwise.

The trough which surmounts the refrigen,

ant-conduit is, as before stated, designed to contain a liquid which will congeal only at a' very low temperature.

To avoid all danger of humidity in the-chamher, which might otherwise occur 011 cessation of the use of the apparatus, I, in practice, provide the lower side edges of the apparatus withsmall channels or gutters a, which con duct whatever water there may be on the exterior of the apparatus to a suitable reservoir, as, for instance, the tank that contains the condenser.

The apparatus is placed the proper distance below the ceiling of the room, and it, as a whole, has such an inclination as will enable the water or condensed moistnrethatgathers on it to flowto some determinate point or points, as provided in the preceding paragraph.

Having now described my invention, and

the manner in which the same is or may be carried into effect, what I claim, and desire to secure by Letters Patent, is-

. 1. In apparatus for ventilating and cooling buildings and other structures, the combinationoE a refrigerant-conduit, a surmounting trough, and an air duct or pipe arranged within the trough, for operation substantially as shown and set forth.

--2. The cooling-trough, designed to contain a .liquid congealable at a low temperature, and provided with a concavo-convex double bottom, which constitutes the conduit for the refrigerating agent, substantially as set forth. 3. The troughsections, constructed substantially as described,- and provided with end plates or flanges, by which the said sections may be fitted andsecured together end to end, substantially as and for the purposes shown and set forth.

In testimony whereof I have hereunto signed my name-this 19th day of March, A. D. 1875.

AUGUSTE J AS.

Witnesses:

-ALBERT G. JANIN,

E. FIXARU. 

